... now from an entirely different angle ...
Mark,
It just _might_ be better if you create a separate table to store the pk from your students table and the total_attendance column. Why? Not only this column adding will be complicated, but maintaining this column in the same table would be very mutating-table-problem-friendly.
If you make it in a separate table (with PK from the original table), you can just create a trigger in the main table to maintain that value as well. Not to mention that this will be less of a problem in the future.
Raj
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Rajendra dot Jamadagni at nospamespn dot com
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QOTD: Any clod can have facts, having an opinion is an art !
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